#include <bits/stdc++.h>
#define F(i,l,r) for(int i=(l);i<=(r);i++)
#define FF(i,r,l) for(int i=(r);i>=(l);i--)
#define M
//#define maxn
#define ll long long
//#define int long long
#define pb(x) push_back(x)

using namespace std;
//const int mod





int main(){
    freopen("arena.in","r",stdin);
    freopen("arena.out","w",stdout);
    ios::sync_with_stdio(false);cin.tie(0),cout.tie(0);
    








    return 0;
}



